802.11 wireless networks the definitive guide
As we all know by now, wireless networks offer many advantages over fixed (or wired) networks. Foremost on that list is mobility, since going wireless frees you from the tether of an Ethernet cable at a desk. But that's just the tip of the cable-free iceberg. Wireless networks are also more...
| Autor principal: | |
|---|---|
| Formato: | Libro electrónico |
| Idioma: | Inglés |
| Publicado: |
Beijing :
O'Reilly
2005.
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| Edición: | 2nd ed |
| Materias: | |
| Ver en Biblioteca Universitat Ramon Llull: | https://discovery.url.edu/permalink/34CSUC_URL/1im36ta/alma991009627154406719 |
Tabla de Contenidos:
- Table of Contents; Foreword; Preface; Prometheus Untethered: The Possibilities of Wireless LANs; Audience; Overture for Book in Black and White, Opus 2; Major Changes from the First Edition; Conventions Used in This Book; Using Code Examples; Safari® Books Online; How to Contact Us; Acknowledgments; Chapter 1. Introduction to Wireless Networking; Why Wireless?; Radio Spectrum: The Key Resource; The ISM bands; What Makes Wireless Networks Different; Lack of Physical Boundary; Dynamic Physical Medium; Security; A Network by Any Other Name...; The Wonderful Thing About Standards...
- Chapter 2. Overview of 802.11 NetworksIEEE 802 Network Technology Family Tree; 802.11 Nomenclature and Design; Types of Networks; Independent networks; Infrastructure networks; Extended service areas; Multi-BSS environments: "virtual APs"; Robust security networks (RSNs); The Distribution System, Revisited; Interaccess point communication as part of the distribution system; Wireless bridges and the distribution system; Network Boundaries; 802.11 Network Operations; Network Services; Station services; Distribution system services; Confidentiality and access control
- Spectrum management servicesMobility Support; Designing Networks for Mobility; Proprietary mobility systems; Chapter 3. 802.11 MAC Fundamentals; Challenges for the MAC; RF Link Quality; The Hidden Node Problem; MAC Access Modes and Timing; Carrier-Sensing Functions and the Network Allocation Vector; Interframe Spacing; Interframe spacing and priority; Contention-Based Access Using the DCF; Error Recovery with the DCF; Using the retry counters; Backoff with the DCF; Fragmentation and Reassembly; Frame Format; Frame Control; Duration/ID Field; Duration: setting the NAV
- Frames transmitted during contention-free periodsPS-Poll frames; Address Fields; Sequence Control Field; Frame Body; Frame Check Sequence; Encapsulation of Higher-Layer Protocols Within 802.11; Contention-Based Data Service; Broadcast and Multicast Data or Management Frames; Unicast Frames; Basic positive acknowledgment (final fragment); Fragmentation; RTS/CTS; RTS/CTS with fragmentation; Powersaving Sequences; Immediate response; Deferred response; Multirate Support; Rate selection and fallback; Frame Processing and Bridging; Wireless Medium to Wired Medium (802.11 to Ethernet)
- Wired Medium to Wireless Medium (Ethernet to 802.11)Quality of Service Extensions; Chapter 4. 802.11 Framing in Detail; Data Frames; Frame Control; Duration; Addressing and DS Bits; Variations on the Data Frame Theme; Applied Data Framing; IBSS frames; Frames from the AP; Frames to the AP; Frames in a WDS; Encrypted frames; Control Frames; Common Frame Control Field; Request to Send (RTS); Clear to Send (CTS); Acknowledgment (ACK); Power-Save Poll (PS-Poll); Management Frames; The Structure of Management Frames; Address fields; Duration calculations; Frame body
- Fixed-Length Management Frame Components
